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perennial sunflower : ウィキペディア英語版 | perennial sunflower Perennial sunflower is a crop of sunflowers that are developed by crossing wild perennial and domestic annual sunflower species. Annual sunflower is a major oilseed crop. Genes from wild perennial relatives may increase root depth and mass and extend the growing season. These upgrades means future varieties with higher yields and better soil conservation. == Background ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「perennial sunflower」の詳細全文を読む
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